Information as of 2000-01-10
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SAA1502ATS; Safety IC for Li-ion

• Description • Features • Datasheet • Blockdiagram • Products, packages, availability and ordering • Find similar products

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Description

The SAA1502ATS is manufactured in a Bipolar, CMOS and DMOS (BCD) Power Logic 70 process and is intended to be used as a protection circuit for single cell Li-ion battery packs. The current and voltage ratings are especially designed for use in battery packs for portable telephones such as GSM.
The circuit monitors the battery voltage, current and temperature and will disconnect the battery in case of an overload situation:

• Overdischarge protection prevents deep discharge of the cell; deep discharge of a Li-ion cell degrades the lifetime
• Overcharge protection for safety reasons
• Overcurrent protection on charge as well as discharge current rate
• Temperature protection for preventing charge or discharge at high temperatures.

It must be stated that the unit is a safety unit to be integrated inside a battery pack. It is not intended as an end of charge provision.

Features

• Integrated power switches
• Temperature protection
• Zero voltage start-up
• Discharge and charge overcurrent protection
• Automatic release of current protection at removal of charger or load
• Extremely low current consumption when battery voltage is lower than 2.3 V
• Low current consumption in normal operation mode
• Accurate voltage detection levels
• Low resistance in current path
• Able to accommodate 17.5 V charge voltage
• Read out of charge disable status
• Small package (SSOP16)
• Low external components count
• Continuous monitoring of the battery voltage and (dis)charge current.

Datasheet

Type nr.	Title	Publication release date	Datasheet status	Page count	File size (kB)	Datasheet
SAA1502ATS	Safety IC for Li-ion	15-Jan-98	Preliminary Specification	20	132	Open

Blockdiagram

Products, packages, availability and ordering

Partnumber	Order code (12nc)	marking/packing	package	device status	buy online
SAA1502ATS/N1	9352 461 00112	Standard marking * tube	SOT338	CQS	-
	9352 461 00118	Standard marking * reel pack, SMD, 13"	SOT338	CQS	-
SAA1502BTS/N1	9352 461 10112	Standard marking * tube	SOT338	WIT	-

Please note, devices listed in the "Products, packages, availability and ordering" table marked with "WIT" are discontinued. Devices marked with "DOD" will be in the near future.
Contact your nearest sales or distributor office for the latest information on product status and availability.

Find similar products:

 SAA1502ATS links to the similar products page containing an overview of products that are similar in function or related to the part number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and products from the same functional category.